Yuan Longping, a great scientist,is the first person to develop a kind of hybrid rice(杂交水稻) which helps fight hunger in China.
Food was a big problem in China in the past. This was because China had 22 percent of the world's population, but only 7 percent of its farmland.In the 1960s, China suffered (遭受)serious hunger.Millions of people died because they had no food.As an agronomy (农学) teacher.Yuan was very sad to see this. "How can I help them have enough food?" he thought.He decided to work on a kind of hybrid rice.It has a high output (产量).
At that time, other scientists didn't think hybrid rice was worth studying. But Yuan and his team worked on it every day. They took very good care of their rice seeds.
At last, in 1973, they grew a new kind of hybrid rice. This rice is strong. Farmers can grow it in many different kinds of farmland and also in bad weather. It can also fight disease. Its output was much greater than common kinds of rice. With the new kind, about 70,000,000 people could have food every year!
Yuan solved the food problem in China.But he is still working on rice.Before he retires (退休),he hopes to grow rice in the sea!
根据短文内容,选择最佳答案.
(1)Why was food a big problem in China in the past?
A. |
Because farmers didn't grow rice. |
B. |
Because farmers didn't have rice seeds. |
C. |
Because China had no money to buy plenty of food. |
D. |
Because China had a large population but a little farmland. |
(2)How did Yuan Longping help people have enough food?
A. |
He discovered another kind of food. |
B. |
He borrowed enough food from other countries. |
C. |
He developed a kind of hybrid rice with his team. |
D. |
He started being an agronomy teacher to study rice. |
(3)Which of the following is NOT mentioned about the new kind of hybrid rice?
A. |
It is able to fight disease. |
B. |
It is grown across the world. |
C. |
Its output is much higher. |
D. |
It can be grown in different farmland. |
(4)Yuan Longping wishes to before he retires.
A. |
grow rice in the sea |
B. |
have a good rest |
C. |
keep several pet cats |
D. |
help people in Africa |
(5)What does this passage mainly talk about?
A. |
The new kind of hybrid rice is worth studying. |
B. |
The new kind of hybrid rice was invented in China. |
C. |
Yuan Longping grew the new kind of hybrid rice for many years. |
D. |
Yuan Longping has played an important role in solving China's food problem. |
There are two websites I think you should know about. Do you find it difficult to say a word correctly? Do you want to hear the correct pronunciation(发音)? If so, what you’ve been looking for is cooldictionary. com. This site is designed to pronounce words and phrases in precise(严谨的) manner. All you have to do is to go to the Pronunciation Help and type in a word. You can also practice your spoken English and improve your communication skill.
Another useful site is www. nutsandboltsguide. com. It has been specifically designed to help you with every step of writing. This site is a must-visit for all those who want to become a writer. It not only talks about different kinds of writing but also discusses a lot about grammar. I’m sure that this site will help you with your writing skills and different writing styles with its sound tips. So get connected and log in to play. Happy surfing!We can know from passage that the cooldictionary. com is _______.
A.a website on the Internet |
B.an electronic dictionary that can pronounce words |
C.a website teaches you how to write |
D.a part of the Pronunciation Help |
What is not offered on the website www. nutsandboltsguide. com?
A.Sound tips on how to write |
B.Guide to different stages(步骤) of writing |
C.Advice on grammar learning. |
D.The pronunciation of each word in your article. |
This passage is probably from ________.
A.a magazine about computer | B.a novel |
C.a newspaper | D.a comic book |
Early to bed and early to rise makes a man healthy, wealthy and wise.
This is an old English saying. It means that we should go to bed early at night and get up early in the morning. If we do, we shall be healthy. We shall also be rich and clever.
Is this true? Perhaps it is. The body must have enough sleep. Children of your age need ten hours’ sleep every night. If you do not go to bed early, you can not have enough sleep. Then you can not think properly and you can not do your work properly. You will not be wise and you may not become wealthy!
Some people go to bed late at night and get up late in the morning. This is not good for them. We should sleep at night when it is dark. The dark helps us to sleep well. When the daylight comes, we should get up. This is the time for exercise. If the body is not used, it will become weak. Exercise keeps it strong.
Exercise helps the blood to move around inside the body. This is very important. Blood takes nutrition (营养) to all parts of our bodies. The brains in our heads also need blood. We think with our brains. If we keep our bodies healthy, and take exercise, we can think better!
Our bodies also need air to breathe. Without air we will die. Get up early in the morning and we can have plenty of clean, fresh air. That will keep us healthy and happy. The old English saying“Early to bed and early to rise makes a man healthy, wealthy and wise. ”mainly shows _______.
A.what good habits are |
B.how to become healthy, rich and clever |
C.what bad habits are |
D.it’s easy for people to get up and go to bed early |
It’s important for people to have enough sleep. If not, they _______.
A.may not be strong |
B.may not become wealthy |
C.can not think and do their work properly |
D.will not get up early |
The word“perhaps”means“_______”.
A.maybe | B.carefully | C.quickly | D.easily |
The last paragraph but one (倒数第2段) tells us that _______ helps the blood to move around inside the body.
A.fresh air | B.enough sleep | C.good habits | D.exercise |
This passage is probably written for _______.
A.old people | B.middle-aged people |
C.weak people | D.children |
The giraffe is the tallest modern land animal. It can be over 5. 5 meters tall. Its neck alone may be 1. 9 meters long. Yet the giraffe has only seven bones in its neck, the same number as in the humans’. Even a small bird has many more bones in its neck than a tall giraffe. Each bone in a giraffe’s neck is very long, while the bones in a human’s neck are short. That makes the difference. A female giraffe gives birth to one baby at a time. The baby, called a calf, is about 1. 9 meters tall at birth. By the age of eight it is full-grown. The giraffe eats mostly leaves. Because it has a long neck, it can reach the leaves high up on the trees. In this passage the underlined word “giraffe” means _______.
A.鲸鱼 | B.长颈鹿 | C.大象 | D.河马 |
The bones in a bird’s neck are _______.
A.as big as in a human’s neck | B.as big as in a giraffe’s neck |
C.many more than in a human’s neck | D.much smaller in a giraffe’s neck |
Which of the following is TRUE?
A.A giraffe has only seven bones. |
B.The giraffe is the largest animal on the land. |
C.It takes eight years for a giraffe to grow up. |
D.Most of the leaves on the trees are eaten up by giraffes. |
When a giraffe is born, it is about _______.
A.5. 5 meters long | B.5. 5 meters tall |
C.1. 9 meters long | D.1. 9 meters tall |
We can guess when a giraffe sees a tiger _______.
A.it will run away as fast as possible |
B.it will run to eat the tiger |
C.it will make the tiger bring it something to eat |
D.it will make one of the smallest animals bring the tiger something to eat |
Coffee has become the most popular drink in America. Today American people drink more coffee than people in any other countries. People drink coffee at breakfast, at lunch, at dinner and between meals. They drink hot coffee or coffee with ice in it. They drink it at work and at home.
People around the world drink coffee. Some people like coffee that is black (纯) and strong (浓), but other people like coffee with cream (奶酪) or sugar, or both cream and sugar in it. In all the ways it is served, coffee has become an international drink.
根据短文内容,判断下列句子正(T)误(F)。The most popular drink in the United States is milk.
People drink coffee at any time.
In this passage there are three different kinds of coffee.
“Coffee has become an international drink. ” means “People all over the world drink coffee nearly. ”
Coffee isn’t a kind of food, but a kind of drink.
This is my school. There are many trees and flowers. The teaching building is big and tall. There is a big playground in our school. It’s very nice to have it. After 4:30 in the afternoon, many students come to the playground to play football and some students play table tennis in the table tennis room.
There are 1,200 students in 30 classes in our school. The students all like to study. The teachers in our school are very good. They help the students to study and sometimes play with them. All the students like them.The teaching building is _____.
A.small | B.old | C.big and tall | D.big |
It’s very nice for this school to have ____.
A.trees and flowers | B.a playground |
C.students | D.teachers |
There are at least (至少) _____ students in one class.
A.45 | B.40 | C.75 | D.60 |
After class the students often go to _____.
A.their classroom | B.their homes |
C.the playground | D.their homes |
What may(可能) teachers NOT DO?
A.Give the students lessons. |
B.Play football and table tennis with the students. |
C.Don’t like some students. |
D.Help students study |